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New Mexico, from small pond at junction of highways 84 and 17, about 13 mi. W. of Chama

New Mexico, from pond at junction of highways 84 and 17, about 13 mi. W. of Chama

Colorado, from Arkansas River at Lamar

Colorado, from Carrizo Creek near Troy

Mexico, Quintana Roo, Cozumel Id., 4 km N San Miguel

Mexico, Yucatan, 9 km. N Merida on Progresso Road

Colorado, Campus, University of Colorado

Oklahoma, from Cimarron River in Oklahoma, about 2 mi. S. of Colorado line below Campo, Baca Co., Colorado

Colorado, Boxelder Creek bottoms along highway 287

Colorado, along highway 24 between Genoa and Flagler

Colorado, Arlington

Colorado, San Luis Lakes

Mexico, Nayarit, 2 mi. W San Blas turnoff

Colorado, Sand "blow-outs" along road about 13 mi. S.W. of Kit Carson

Colorado, sand bars along the Arkansas River at Lamar

Colorado, Chautauqua

New Mexico, 30 mi. S Alamogordo

Colorado, Bear Creek, on highway 89, about 6 mi. S. of Buckeye

Mexico, Chihuahua, 31 miles S Chihuahua on Highway 45

Mexico, Chihuahua, 90 miles N Chihuahua on Highway 45

Colorado, Lone Rock Draw on highway 287, about 3 mi. S. of Springfield

Mexico, Quintana Roo, Cozumel Island, 9 km. SE San Miguel

Oklahoma, Cimarron River in Oklahoma, about 2 mi. S. of the Colorado line, below Campo, Baca Co., Colorado

Colorado, about 10 mi. E. of road junction N. of Campo

Colorado, Southeast of Campo

Colorado, Near Boulder

Colorado, Purgatoire River S. W. of Higbee

Mexico, Chihuahua, 20 miles N Chihuahua

Mexico, Quintana Roo, Cozumel Island 9 km. SE San Miguel

Mexico, Sonora, 35 miles SE Navajoa

Colorado, from rock out crop on N side of highway 160, about 2 mi. W of Branson

Mexico, Michoacán, 10 miles E Morelia

Mexico, Yucatan, Piste, dry open forest

Colorado, from North Veta Creek, west of Walsenburg, on highway 160.

New Jersey, Belleplain National Forest, Lake Nummy

Colorado, between Watervale and Trinchera, on Hwy 160

Colorado, 2.5 miles NW Franktown

Colorado, 3.5 miles W Last Chance

Colorado, Boulder, University of Colorado campus

Colorado, from dry gulch between Towaoc and Four Corners

North Carlolina, Shackleford Banks

Mexico, Sonora, 26 miles E San Luis

Colorado, from rocky hillside near a desert water tank about 5 mi. S.W. of Towaoc

Colorado, from a rocky hillside near a desert water tank about 5 mi. S.W. of Towaoc

New Mexico, 25 miles N Gallup

Arizona, 4 miles S Congress Junction

Colorado, from about 3 mi. W of Dove Creek

Colorado, In sagebrush, 1 mi E of Ohio City

Colorado, from Disappointment Creek Canyon, about 1 mi. above Dolores River on highway 80

Mexico, Sonora, 30 miles E San Luis